3349553 XCMG GR2605 motor grader planetary axis

3349553 XCMG GR2605 motor grader planetary axis

The 3349553 planetary shaft is a core component of wheel-side reducers and planetary transmission mechanisms in construction machinery. It primarily mounts planetary gears, undertaking torque transmission, support, and positioning functions, ensuring the smooth revolution and rotation of the planetary gears. It is a critical load-bearing shaft component within the drive axle and reducer.

Technical Parameters

Model: 3349553
Material: High-strength alloy steel, tempered and surface-hardened
Hardness: High surface hardness and wear resistance; strong and impact-resistant core
Precision: High journal coaxiality; stable fit clearance
Applicable Temperature: -40℃～120℃
Lubrication Method: Gear oil lubrication
Structure: Precision optical shaft / with positioning structure, suitable for planetary gear and bearing installation

Suitable Scenarios

Suitable for drive axles, wheel-side reducers, and planetary gear mechanisms in construction machinery such as loaders, graders, and road rollers; it works with planetary gears, bearings, and gear rings to achieve high torque reduction and power transmission, suitable for heavy-duty and impact-prone operating conditions.

Common Faults and Troubleshooting

Junior journal wear/scoring: Caused by insufficient lubrication or bearing failure. Replace the 3349553 planetary shaft and the bearing simultaneously.

Bending/deformation/abnormal operating noise: Caused by overload impact or assembly misalignment. Replace the planetary shaft and correct the installation position.

Overheating/Seizing: Caused by insufficient clearance, impurities, or poor lubrication. Clean the cavity and assemble according to the standard clearance.

Breakage/Cracking: Caused by severe overload or material fatigue. Replace directly with an original factory planetary shaft and check the gear meshing.

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1 70812 Bolt M12×1.5×45
2 3239223 Locking Plate
3 3233683 Locking Disc
4 3267253 Sprocket
5 71624 Bearing
6 3114333 Washer
7 71355 Seal
8 3349543 Support Body
9 70573 Bearing
10 70386 Bolt M18×1.5×50
11 3349583 Output Shaft
12 71860 Pins
13 71860 Pin
14 3349513 Gear Ring
15 3349553 Planetary Shaft
16 3127443 Flat Washer
17 3127443 Roller Assembly 18 3132833 Spacer
19 3132823 Planetary Gear
20 3349573 Planetary Carrier
22 70201 Retaining Ring

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